0001140361-24-011554.txt : 20240305 0001140361-24-011554.hdr.sgml : 20240305 20240305213113 ACCESSION NUMBER: 0001140361-24-011554 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240301 FILED AS OF DATE: 20240305 DATE AS OF CHANGE: 20240305 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Dun Haiping CENTRAL INDEX KEY: 0001721581 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38273 FILM NUMBER: 24724163 MAIL ADDRESS: STREET 1: C/O ACM RESEARCH, INC. STREET 2: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ACM Research, Inc. CENTRAL INDEX KEY: 0001680062 STANDARD INDUSTRIAL CLASSIFICATION: SPECIAL INDUSTRY MACHINERY, NEC [3559] ORGANIZATION NAME: 06 Technology IRS NUMBER: 000000000 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 BUSINESS PHONE: 510-445-3700 MAIL ADDRESS: STREET 1: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 4 1 form4.xml FORM 4 X0508 4 2024-03-01 0001680062 ACM Research, Inc. ACMR 0001721581 Dun Haiping C/O ACM RESEARCH, INC. 42307 OSGOOD ROAD, SUITE I FREMONT CA 94539 true false Class A Common Stock 2024-03-01 4 M 0 35000 0.5 A 890090 D Class A Common Stock 2024-03-01 4 F 0 566 30.92 D 889524 D Stock Option 0.5 2024-03-01 4 M 0 35000 0 D 2025-04-30 Class A Common Stock 35000 130001 D On March 1, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 566 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 29, 2024 of $30.92, and issuing to the reporting person the remaining 34,434 shares of Class A Common Stock. The option is fully vested and exercisable. /s/ Mark McKechnie, Attorney-in-Fact for Haiping Dun 2024-03-05